A slight depression filled with windblown cones and needles is all that remains of what was likely a hundred-foot-high (30-meter-high) Jeffrey pine tree. It was partly buried in ashes from the eruption of Cinder Cone in Lassen Volcanic National Park and then caught fire. Cinder Cones ash field is dotted with such depressions, which formed after the buried stumps rotted away. Radiocarbon testing of remnant trees provided the definitive clue to Cinder Cones age, now estimated at about 350 years.